function MyFunc(a,b){
    var c= a+b;
    var d= a*b+c;
    return c+d;
}
console.log(MyFunc(10,20));
(function (){
    // var a = 0;
  console.log("1");
  // console.log(a);
  Hg();
  return "";
  console.log("2");
  var a=1;
  function Hg(){
      console.log(a);
      console.log("Hg");
  }
})()
